is known to all, success result from diligence while laziness result in failure．
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________ is known to all, success result from diligence while laziness result in failure．
A.That
B.It
C.As
D./
试题答案
C
________ is known to all, success result from diligence while laziness result in failure．
A.That
B.It
C.As
D./
C